Electric-lamp fixture



M.a GUETT March 24, 1931.

ELECTRIC LAMP FIXTUR Filed June 24, 1927 Patented Mar. 24, 1931 UNITED STATES 'PATENT OFFECE C MONROE GUETT, OF HARTFORD, CONNECTICUT, ASSGNOR TO THE HART & I'IEGEMAN MANUFACTURING COMPANY, CF HARTFORD, CONNECTICUT, A CORPORATION OF l CONNECTICUT ELECTRIC-LAMP FIXTURE Application- :iled June 24, 1927. Serial No. 201,097.

The -inventionsl object is to improve the convenience of wiring andsecurity of mounting of lamp sockets, particularly those to be located inside of husks or the bases of lreiiectors and the like, where the making of the electric connections is difficult on account of the restricted space; and a special and additional object of the invention is to provide easy adjustability in such mountings so that the lamp, or lvother translating device, can he properly located in relation to other parts. f l The invention Aconsists inthe general rganizat-ionand in the details, and in the combination of details, as expressed in the accompanying claims, and all of which are exemplified. though without limitation, by the iixture shown in the accompanying drawings, wherein Fig. 1 is a longitudinal section of the fixture employed with a form of reflector.A Fig. V2, a vertical axial section partly in elevation; Fig. 3 a cross section and end view of'bracket structure and Figs. 4, 5 and 6 details. c

AAn 'ordinary outlet wall box 1 is shown in Fig. 1` provided with the usual hickey 2,

`which inthe present case represents the support for the new xture, but itwill be understood that its manner of support is subject to intinite variation, according to the situation in which the iixture is to beY used. The fixture includes a main bracket, comprising a headB and afpair of opposite fingers 4 secured to the head by screws or in anyyother n suitable way; they could -be integral. The Y u n on the hollow boss of the head plate 3 by head 3 is provided with attachment means in the form of a hollow threaded boss, by which Yit is screwed on to thev end of the l1ickev-2 or other 'supporting member. The ltwo lfingers 4 carry and are ioined by a contractile ring,

'which may be formed of two half rings or sections, marked 5 and 6 respectively, one being riveted or clinched to each finger as shownv in Fig. 4, and the meeting ends oi` the two sections being connected to each other by a power-applying mechanism by means of which the ring may be contracted o n or toward the lamp socket 7 which occupies the space within it.

The construction of the contracting mechanism is subject to variation, but is so designed, in all cases, as kto beoperable from the outer end of the fixture, that is to say by means of a screw-driver inserted through the open end of the closure 8 which, as above stated, may be any enclosure, either an orn'amental husk or a reiector as illustrated in the case in hand. In the present case, the contracting mechanism comprises a` bell crank 9 pivoted on a stud 9a in one end of each ring section with one of its arms extendlng parallel with the axis of the socket and l the other transverse. The parallel arm is engaged by a hook 10 on the proximate end of the mating ring section, while the trans- ,Y verse arm 1s engaged by an operatmg'screw 11 threaded in an outturned lug on the other section. The nicked heads of the screws face Y outwardly, and setting them inwards draws the ring sections together. The hook 10 of and hooks at both their meeting ends,'but it is withinthe invention to use any appropri- V ate means vfor contracting the ring or otherwise clamping the bracket structure upon the socket, provided the operating member faces outwardly for convenient access by al screw driver. i

The outer enclosure or reflector 8 is secured means of a clamp nut 18, and can be'put in place priorto the attachment of the bracket to its support. Asshown in the drawing, this enclosure completely surrounds the bracketand socket and needy be of no greater diameter than will suffice to accommodate such moderate projections as are represented by the bell crank 9 and screw lug 1 2.

rlhe circuit wires are pulled through the hickey and the tubular boss of the bracket structure into the interior of the latter, in the usual way, for connection to the socket terminals. Y

The socket 7 is of insulating material and ,.70 one section is guarded against slipping oil' of v internally provided at its outer end with the usual contacts for receiving a standard lamp base as will be understood. At its inner end, it is provided with binding screws such as 14 for connecting the contacts with the circuiting wires. Preferably, the whole inner face of the socket is deeply recessed so that the binding screws 14 are thus protected by the surrounding insulating rim of the socket and the bare ends of the wires-protruding from under the screw-heads are kept out of contact with any other part. Externally, the socket is provided with two opposite, longitudinal and hat-bottomed channels 15 or other equivalent surfaces, to receive and slide on the lingers 4l?. Its inward movement on these fingers is limited by' twov in-turned tabs 16 on one or bot-h of the lingers and' its outward movement by one or more projections or lugs 17, cast or formed on the socket body. These are adapted to abut the contractile ring, butby expanding the ring suliiciently the lugs will passV under it, thusY permitting the socketto; be removed and inserted without completely separating the ring sections. By contracting the ring, the two lingersa are clamped toward or' against the flat bottoms of the channels 15 and obtain a holding or' clamp surface on the socket which is approximately equal in length to the length of the latter, thereby making the connection specially secure and without exerting excessive pressure. It isv not necessary that the ring itself shall clamp on, or even engage Ythe socket, since its function, inthe case in hand, is primarily to operate the lingers as clamp members, but it isnevertheless desirable that the ring also shall directly clamp the socket to give addedsecurity. Within the general scope ofthe invention, the ring might constitute the sole clamp member and would be sufficient for this purpose, if its width or dimension longitudinally of the socket should be s uflicient to provide the desired stability for the latter, because the theory of this invention looks toward. the

clamping of the socket by the bracket over a long surface on the latter, substantially co-extensive with its length. ABy organizing the fingers as flat and slightly flexible clampmembers, snugly fitting the shallow channels 15, this object is accomplished in a s imple and inexpensive manner, but other forms of engagement between bracket and socket could obviously be substituted with equal effect.

It will be apparent thatl when the wires have been pulled into the bracket, they can be connected to the socket while the latter is outside the enclosing husk, or sulliciently removed from the interior thereof to permit `the work to be done conveniently. The wires may be then pushed back or crumpled into the space in the rear of the bracket and more `or less into the rear recessof the socket as r the latter is introduced into the bracket, On

tightening the operating screws, the socket is permanently mounted but can 4be set in or out as desired within the limit of its clamplength, thus to bring a lamp filament exactly at the focus of the reflector or in some other desired position.l Even in its outermost position, vthe surface of the clamp-engagement between socket and bracket has considerable longitudinal extent andfthough thel clamp lengthmay not be as long as when the, socket is placed further inward, it is still-adequate, by reason of the close litting of the lingers in the channels 15 and by the help of the ring, to hold the socket. against displacement from any ordinary cause. A

`Ialaving' described the invention, the following is claimed:

1. In a lightllxture the combination oli a husk or like enclosure, a socket anclaclamping bracket therein, a socket' clamp on said bracket including a socket engaging member, a bell crank f or 'operating'V the same; and an operating screw for said bell crank disposed longitudinally of the socket with its head faced outward-ly. e Y

2. In a light fixture having a husk or like enclosure, a bracket for supporting; as socket therein comprising opposite lingers'longitudinally engageablle with the socket, acontractile ring carried by said lingers and surrounding the socket' and means adjustable toI draw the ring and also ther lingers; into clamping engagement' with said socket'.

3. In a lighting fixture, the comloination of a support, a husk or like enclosure thereon, a socket, a socket supportingl clamp bracketwmoulnted on the'supp'ortY within the enclosure and comprising opposite lingers'- engaginglongitudinal channels in the exterior of' the socket, a contractile ringadjnstable' 4to force the fingers into said channels and tightening' means for said ring located? between the socket and theI wall: of then enclosure operable from the openf end of the latter when r bracket mounted on the support within said e enclosure, said bracket comprising fingers and the socket sli'dably mounted'` on and-in engagement therewith, means provided on said kfingers for limiting the sliding movement of the socketthe're'om and clamp tightening means located 4between the4 socket and the enclosure wall operable from the open end of the enclosure when the' socket is in place..

5. In a lighting fixture, the combination of a support, a husk Vor like enclosure there-A on, a bracket within thev enclosure,A asocket mounted on the bracket for slidingv adjustmentv relatively theretoand' a contractile; ring 'for clamping the socket with respect to the bracket having an adjustment screw disposed longitudinally of the socket between izo i l i the latter and the wall of the enclosure with its head faced outwardly toward and accessible from the open end of the husk or enclosure.

6. In a lighting fixture of the kind described, the combination of a support, av

socket supporting bracket thereon, a socket slidably supported on the bracket, stop means on said bracket for limiting sliding movement of the socket thereon in on-e direction, stop means on the socket for limiting its sliding movement on the bracket in the other direction, clamping means for securing said socket relatively to the bracket in predetermined position intermediate the limits established by said stop means, a. husk or like enclosure on said support enclosing said support, socket and bracket and an adjustment screw for said clamping means operable from the open end of the enclosure when the socket is in place.

7. A lighting xture comprising a husk or like enclosure, a socket-supporting bracket mounted therein inI fixed relation to the enclosure, a lamp socket organized for adjustment on the bracket to accommodate different lamps to the enclosure, clamping means associated with said bracket and socket operative in one position to clamp the latter against movement relatively to the bracket and in another position to release the socket to permit its said adjustment on the bracket, and

an operating screw disposed longitudinally of the socket with its head faced outwardly and accessible from the open end of the enclosure, said screw arranged to actuate said clamping means.

In testimony whereof, I have signed this specification.

MONROE GUETT.

CERTIFICATE OF CORRECTION.

Patent No. 1,797,983. Granted March 24, 1931, to

MONROE GUETT.

It is hereby certified that the name of the assignee in the above numbered patent was erroneously described and specified as "The Hart & Hegeman Manufacturing Company", whereas said name should have been described and specified as ilse Arrow-Hart & Hegeman Electric Company, as shown by the records of assignments in this office; and that the said Letters Patent should be read with lthis correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 21st`day of April, A. D. 1931.

M. J. Moore, (Seal) Acting Commissioner of Patents. 

